US3665972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dobbies
Assignee: Staeubli AG
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Filing: 1970-09-01
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Granted: 1972-05-30
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Expires: 1990-09-01
Abstract
Abstract A dobby in which the reading needles are actuated into reading position of a perforated pattern card by a first system that applies a low value driving force to the needles so that the pattern card is not damaged if a perforation is not sensed by the needles as would be the case if too strong a force were applied to the reading needle. A second driving system operative in a series mode with the first system applies a stronger driving force to the needles in those instances where a perforation in the pattern card is read by the needles.
Inventors
- 👤 Ernest Hoenig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:39
CPC Classifications
D; D03; D03C; D03C1/00; D03C1/14; D03C1/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
331 words
A dobby with at least one needle for reading a perforated pattern card comprising, two driving means for applying force to the reading needle sequentially, a first one of said driving means having means to apply a low value force to initiate the reading of the pattern card by the reading needle and initiate entry of said needle into a perforation, and a second one of said driving means effective to apply force to the reading needle to continue insertion of said needle into a perforation when there is a slight movement of the needle into a perforation of the pattern card, the second driving means having means comprising a positively driven lever mechanism applying greater force than the force of the first driving means to move the needle deeper into the perforation of the pattern card, a needle holder, said lever mechanism comprising a double lever having first and second lever arms driven so that it swings to and fro, a cam on the needle holder, the cam and lever arms being so arranged that the first arm, during the movement of the double lever away from the pattern card lifts the needle out and away from the pattern card against the force of the weaker first means, and during its movement toward the pattern card, releases the needle for reading the pattern card, and the second arm entrains the needle holder, during its movement towards the pattern card, if the needle has moved slightly into a perforation which has been read, and the cam having a face cooperating with the second arm to allow during this movement the arm to slide past the cam and does not entrain the needle holder, if the needle only rests on the pattern card and has not read any perforations, said needle holder comprising a second cam, the first mentioned cam cooperating with the first arm of the double lever, and the second cam cooperating with the second arm of the double lever.
Claim 2
Dependent Claim
331 words
A dobby with at least one needle for reading a perforated pattern card comprising, two driving means for applying force to the reading needle sequentially, a first one of said driving means having means to apply a low value force to initiate the reading of the pattern card by the reading needle and initiate entry of said needle into a perforation, and a second one of said driving means effective to apply force to the reading needle to continue insertion of said needle into a perforation when there is a slight movement of the needle into a perforation of the pattern card, the second driving means having means comprising a positively driven lever mechanism applying greater force than the force of the first driving means to move the needle deeper into the perforation of the pattern card, a needle holder, said lever mechanism comprising a double lever having first and second lever arms driven so that it swings to and fro, a cam on the needle holder, the cam and lever arms being so arranged that the first arm, during the movement of the double lever away from the pattern card lifts the needle out and away from the pattern card against the force of the weaker first means, and during its movement toward the pattern card, releases the needle for reading the pattern card, and the second arm entrains the needle holder, during its movement towards the pattern card, if the needle has moved slightly into a perforation which has been read, and the cam having a face cooperating with the second arm to allow during this movement the arm to slide past the cam and does not entrain the needle holder, if the needle only rests on the pattern card and has not read any perforations, said needle holder comprising a second cam, the first mentioned cam cooperating with the first arm of the double lever, and the second cam cooperating with the second arm of the double lever.
Claim 3
Dependent Claim
194 words
A dobby with at least one needle for reading a perforated pattern card comprising, two driving means for applying force to the reading needle sequentially, a first one of said driving means having means to apply a low value force to initiate the reading of the pattern card by the reading needle and initiate entry of said needle into a perforation of said pattern card, and a second one of said driving means effective to apply force to the reading needle to continue insertion of said needle into a perforation when there is a slight movement of the needle into a perforation of the pattern card, a needle holder, the second driving means having means applying a greater force than the force of the first driving means to move the needle deeper into the perforation of the pattern card, said second driving means comprising a positively driven lever mechanism acting to drive the needle, said lever mechanism comprising a blade swinging in operation to and fro approximately in a straight line and cooperating with said needle holder to drive the needle upon the movement exerted by the low value force for reading a perforation.
Claim 4
Dependent Claim
194 words
A dobby with at least one needle for reading a perforated pattern card comprising, two driving means for applying force to the reading needle sequentially, a first one of said driving means having means to apply a low value force to initiate the reading of the pattern card by the reading needle and initiate entry of said needle into a perforation of said pattern card, and a second one of said driving means effective to apply force to the reading needle to continue insertion of said needle into a perforation when there is a slight movement of the needle into a perforation of the pattern card, a needle holder, the second driving means having means applying a greater force than the force of the first driving means to move the needle deeper into the perforation of the pattern card, said second driving means comprising a positively driven lever mechanism acting to drive the needle, said lever mechanism comprising a blade swinging in operation to and fro approximately in a straight line and cooperating with said needle holder to drive the needle upon the movement exerted by the low value force for reading a perforation.
Claim 5
Dependent Claim
47 words
A dobby according to claim 2, including a guide cooperating with the needle holder which has at least one offset so that when there is longitudinal movement of the needle a small lateral displacement occurs to cause engagement of a notch of the holder with the blade.
Claim 6
Dependent Claim
44 words
A dobby according to claim 2, including a pawl swingably attached to the needle holder, which upon the slight longitudinal movement of the needle engages in the path of movement of the blade and transmits the swingiNg movement of the blade to the needle.
Claim 7
Dependent Claim
216 words
A dobby with at least one needle for reading a perforated pattern card comprising, two driving means for applying force to the reading needle sequentially, a first one of said driving means having means to apply a low value force to initiate the reading of the pattern card by the reading needle and initiate entry of said needle into a perforation, and a second one of said driving means effective to apply force to the reading needle to continue insertion of said needle into a perforation when there is a slight movement of the needle into a perforation of the pattern card, the second driving means having means for applying a greater force than the force of the first driving means to move the needle deeper into the perforation of the pattern card, said dobby comprising a Hattersley-type dobby having a baulk and draw-hook attached to ends thereof, including a needle holder having an extension, a draw-blade operative to and fro and a tilting lever actuated by said extension to place the draw hook in and out of contact with said draw-blade, a pull rod for actuating said needle holder having some play, and means to reduce the play when said needle reads a perforation in said pattern card under control of said low value force.
Claim 8
Dependent Claim
216 words
A dobby with at least one needle for reading a perforated pattern card comprising, two driving means for applying force to the reading needle sequentially, a first one of said driving means having means to apply a low value force to initiate the reading of the pattern card by the reading needle and initiate entry of said needle into a perforation, and a second one of said driving means effective to apply force to the reading needle to continue insertion of said needle into a perforation when there is a slight movement of the needle into a perforation of the pattern card, the second driving means having means for applying a greater force than the force of the first driving means to move the needle deeper into the perforation of the pattern card, said dobby comprising a Hattersley-type dobby having a baulk and draw-hook attached to ends thereof, including a needle holder having an extension, a draw-blade operative to and fro and a tilting lever actuated by said extension to place the draw hook in and out of contact with said draw-blade, a pull rod for actuating said needle holder having some play, and means to reduce the play when said needle reads a perforation in said pattern card under control of said low value force.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |